1 /* 2 * Copyright (C) 2021 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.systemui.shared.system; 18 19 import android.os.IBinder; 20 import android.view.SurfaceControl; 21 import android.window.TransitionInfo; 22 23 /** Interface for something that runs a remote transition animation. */ 24 public interface RemoteTransitionRunner { 25 /** 26 * Starts a transition animation. Once complete, the implementation should call 27 * `finishCallback`. 28 */ startAnimation(IBinder transition, TransitionInfo info, SurfaceControl.Transaction t, Runnable finishCallback)29 void startAnimation(IBinder transition, TransitionInfo info, SurfaceControl.Transaction t, 30 Runnable finishCallback); 31 32 /** 33 * Attempts to merge a transition into the currently-running animation. If merge is not 34 * possible/supported, this should do nothing. Otherwise, the implementation should call 35 * `finishCallback` immediately to indicate that it merged the transition. 36 * 37 * @param transition The transition that wants to be merged into the running animation. 38 * @param mergeTarget The transition to merge into (that this runner is currently animating). 39 */ mergeAnimation(IBinder transition, TransitionInfo info, SurfaceControl.Transaction t, IBinder mergeTarget, Runnable finishCallback)40 default void mergeAnimation(IBinder transition, TransitionInfo info, 41 SurfaceControl.Transaction t, IBinder mergeTarget, Runnable finishCallback) { } 42 } 43